Those golden minutes before you are completely awake when your mind is just drifting you have no censorship you are ready to develop any kind of idea. That's when I come up with the best and worst ideas. That is the privilege of being a writer - that you can stay in bed for an hour in the morning and it's work time.
Since it's based on my parents it's more emotionally close to me than some of my more surreal plays. And then I like the balance of the comic and the sad. It should play as funny but you should care about the characters and feel sad for them.